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The reaction: NH(2)CN(s) +(3)/(2)O(2)(...

The reaction:
`NH_(2)CN(s) +(3)/(2)O_(2)(g)rarr N_(2)(g) +CO_(2)(g) +H_(2)O(l)`
Was carried out in a bomb caloriemeter. The heat released was `743 kJ mol^(-1)`. The value of `DeltaH_(300K)` for this reaction would be

A

`-740.5 KJ mol^(-1)`

B

`-741.75 KJ mol^(-1)`

C

`-743.0 KJ mol^(-1)`

D

`-744.25 KJ mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
In Bomb calorimeter `rArr Delta E = -743 kJ mol^(-1)`
`Delta H=Delta E+Delta n_(g)RT`
`Delta H=-743+(1)/(2)xx8.314xx10^(-3)xx300`
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ALLEN-THERMODYNAMICS -EXERCISE -2
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